bertsmobile1
Lawn Royalty
- Joined
- Nov 29, 2014
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- 65
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I am not disagreeing with you on oil changes if that is what you believe in. Where I live I find that changing oil isn't going to happen for the average city type person. I really think this is a very good idea for Briggs and the type of person that isn't going to change the oil anyways. Nothing is said you can't change the oil if you want to, so just change it. I have been using the 100:1 oil mix in all my 2 cycle engines for years now without any problems only I use Amsoil. I won't get into how many miles or hours I change my oil because we would be disagreeing on that one and we won't change each others mine so why try. Oil has come a long ways since I started working on cars. Yes I also have been a mechanic all my working years and still doing it part time now that I am in my mid 70's.
Yes Oils have come a long way but they still pick up particulates and still go acid.
It is the metallurgy that really makes the difference, followed by advances in maching that allows for closer & tighter production tolerances.
As for 2 strokes, Victa recommended 25:1 back in 1954 when the oil used was BP Energol.
They still recommend 25:1 but I put 50:1 in every thing using Stens 2 stroke oil and have seen no problems to date.
I would think of going leaner but too many engines have fixed jettings so by the time you get to 100:1 the fuel mix would be getting a lot thinner so running rich and getting a clean burning plug now days is hard enough as it is with the rubbish sold as "fuel".
Had this problem in the 70's with a JAWA motorcycle that was jetted for 8:1.
Ended up running it on 25:1 but had to replace the carb.